Results 1 to 10 of about 1,018,273 (298)

The Impact of NPV on the Spectral Parameters in the Yellow-Edge, Red-Edge and NIR Shoulder Wavelength Regions in Grasslands [PDF]

open access: goldRemote Sensing, 2022
Even though research has shown that the spectral parameters of yellow-edge, red-edge and NIR (near-infrared) shoulder wavelength regions are able to estimate green cover and leaf area index (LAI), a large amount of dead materials in grasslands challenges
Dandan Xu   +3 more
doaj   +5 more sources

Study of a High Spectral Resolution Hyperspectral LiDAR in Vegetation Red Edge Parameters Extraction [PDF]

open access: goldRemote Sensing, 2019
Non-contact and active vegetation or plant parameters extraction using hyperspectral information is a prospective research direction among the remote sensing community.
Changhui Jiang   +9 more
doaj   +4 more sources

The Red Edge Problem in asteroid band parameter analysis [PDF]

open access: bronzeMeteoritics & Planetary Science, 2016
AbstractNear‐infrared reflectance spectra of S‐type asteroids contain two absorptions at 1 and 2 μm (band I and II) that are diagnostic of mineralogy. A parameterization of these two bands is frequently employed to determine the mineralogy of S(IV) asteroids through the use of ordinary chondrite calibration equations that link the mineralogy to band ...
Sean S. Lindsay   +3 more
openaire   +2 more sources

Detection of calcium, magnesium, and chlorophyll variations of wheat genotypes on sodic soils using hyperspectral red edge parameters

open access: goldEnvironmental Technology & Innovation, 2022
Plants grown on sodic soils can suffer from macronutrient deficiencies, such as calcium (Ca), magnesium (Mg), and potassium (K), reducing health and growth. Nutrient concentrations in plant tissue could potentially provide a signal to identify cultivars tolerant to sodic conditions.
Malini Roy Choudhury   +7 more
openaire   +4 more sources

Monitoring Chlorophyll and Nitrogen Contents in Cotton Leaf Infected by Verticillium wilt with Spectra Red Edge Parameters [PDF]

open access: bronzeActa Agronomica Sinica, 2013
The relationship between chlorophyll (Chl) content, leaf nitrogen content (LNC) and red edge parameters were analyzed, and diagnose models of spectra red edge parameters were established for cotton leaf infected by Verticillium wilt. Results showed that: (1) Chl a, Chl b, Chl a+b content, and LNC decreased with increasing in severity level (SL) of ...
Bing CHEN   +9 more
openaire   +2 more sources

Comparison of Vegetation Indices and Red‐edge Parameters for Estimating Grassland Cover from Canopy Reflectance Data [PDF]

open access: bronzeJournal of Integrative Plant Biology, 2007
AbstractThere has been a great deal of interests in the estimation of grassland biophysical parameters such as percentage of vegetation cover (PVC), aboveground biomass, and leaf‐area index with remote sensing data at the canopy scale. In this paper, the percentage of vegetation cover was estimated from vegetation indices using Moderate Resolution ...
Zhan‐Yu Liu   +3 more
  +4 more sources

Towards red‐edge positions less sensitive to canopy biophysical parameters for leaf chlorophyll estimation using properties optique spectrales des feuilles (PROSPECT) and scattering by arbitrarily inclined leaves (SAILH) simulated data [PDF]

open access: greenInternational Journal of Remote Sensing, 2008
Several methods for extracting the chlorophyll sensitive red‐edge position (REP) from hyperspectral data are reported in literature. This study is a continuation of a recent paper published as ‘A new technique for extracting the red edge position from hyperspectral data: the linear extrapolation method’.
Cho, M.A., Skidmore, A.K., Atzberger, C.
openaire   +3 more sources

Spectrum analysis of hyperspectral red edge position to predict rice biophysical parameters and grain weight

open access: bronzeJournal of the Japan society of photogrammetry and remote sensing, 2008
Rice canopy hyperspectral reflectance data were perpetually measured to analyze the red edge position (REP) corresponded to grain weight during growing season in Java Island, Indonesia. Reflectance measurements were conducted concurrently with biomass sampling of three rice cultivars and four nitrogen application levels (N level) whose were involved in
Muhammad EVRI   +2 more
  +5 more sources

Extracting Red Edge Position Parameters from Ground- and Space-Based Hyperspectral Data for Estimation of Canopy Leaf Nitrogen Concentration in Rice [PDF]

open access: goldPlant Production Science, 2011
To realize non-destructive and real-time monitoring of crop nitrogen status for precision management in rice fertilization, we characterized the reflectance spectra in the red edge area from ground- and space-based data, and quantified the relationships between the red edge position (REP) derived from different algorithms and canopy leaf nitrogen ...
Yongchao Tian   +4 more
openaire   +3 more sources

Home - About - Disclaimer - Privacy